Knot finisher and trimmer for spooling-machines.



' No. 650,620. Patented May 29, 1900 A. STAFFORD.

KNOT FINISHEB AND TRIMMER FOR SPOOLING MACHINES.

(Application filed June 6, 1898.)

(No Model.)

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QMMM M wwalw UNITED STATES PATENT OFFICE.

ARTHUR STAFFORD, or LANCASTER, CANADA.

KNOT FINISHER AND TFHMMER F0? SPOOLiNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 650,620, dated May 29, 190

Application filed June 6, 1898- Serial No. 632,681. (No model.)

To all whom it may concern:

' Be it known that I, ARTHUR STAFFORD, a subject of the Queen of Great Britain, residing at Lancaster, in the county of Glengarry, Province of Ontario, Canada, have invented certain new and useful Improvements in Knot Finishers and Trimmers for Spoofing-Frames, 850., of which the following is a specification, reference being had therein to the accompanying drawings.

In the process of winding yarns from spinning-bobbins onto spooler-bobbins and the like frequent piecing or joining of the yarns becomes necessary. This piecing or joining is etfected by tying together the ends which are to be united. In the course of a days labor the attendant upon a spoofing-machine or the like is required to tie a great many knots, the number running far into the thousands. After tying and drawing up a knot it is desirable that the loose or free projectin g ends of the yarns should be removed, and the duty of effecting the removal of such ends devolves upon the attendant aforesaid. The said removal is effected ordinarily by breaking the loose or projecting ends over the finger or thumb of the attendant close to the knot. Constant repetition of this operation occasions soreness and injury of the finger or thumb which is used for the purpose, with the result that the attendant either fails to break off the ends as closely to the knot as is desirable or shirks the duty altogether and permits the knots, with their loose ends and bunches, to pass onto the spooler-bobbins, thereby giving rise to trouble, breakages, and defective products in the subsequent processes. Various endeavors have been made to obviate the difficulty, as by contriving difierent kinds of knot tying and trimming devices, and a trimmer has been produced in the shape of a blade on a ring intended to be worn on one finger of the spooler attendant. So far as I am aware, however, no device for the purpose has yet been found sufficiently practical and convenient or satisfactory to come into general use.

The aim of my invention is to provide a simple and convenient device fitted for application to a spooling-frame or the like and whereby to facilitate the operation of trimming or removing the loose or projecting ends at a knot.

The invention consists in the novel device which I now shall proceed to describe with reference to the accompanying drawings. The said device serves not only to assist in removing the loose or projecting endsaforesaid and to cause the disconnection thereof to take place immediately at or adjacent to the knot, but it causes the knot to become fully drawn,

tightened, and thus reduced in size, and fin ished.

Figure l of the drawings shows in front elevation a well-known form of spooler-clearer with one form of my invention applied there to. Fig. 2 is a view thereof in side elevation. Fig. 3 is a view thereof in plan, showing also portion of the supporting-rod of the clearer. Fig. 4 is a perspective showing, detached, the knot trimming and finishing device of Figs. 1, 2, and 3 and illustrating the manner in which a knotted yarn is applied thereto. Fig. 5 is aview in front elevation of a clearer provided with a modification of my invention.

In the drawings, 1, Fig. 3, designates a por tion of the usual clearer-supporting rod of a yarn-spooling machine, and 2 designates a clearer, the latter being shown mounted upon the said rod in Fig. 3.

21 is the upper blade of the clearer. 22 is the lower blade thereof. 23 is the slit between said blades and through which the yarn passes, and 2a is the customary detent for preventing removal of the yarn from the said slit. In the form of clearer which is shown in the drawings each blade is formed with one-half of a bearing, as at 25, which fits the rod 1, and the two half-bearings are clamped upon the said rod to hold the clearer in place by means of screws 24:0 240.

A device embodying my invention is shown at 3 in Figs. 1, 2, and 3. It here consists of a strip of sheet metal that is bent at its lower end to form a foot 31, the latter resting upon the top of the half-bearing of the upper clearer-blade 21 and having a hole therethrough for the passage of one of the clamping-screws 2&0, the device being therebyheld in place by the said screw. I form the device with jaws, as 32 33, separated by a space, as at 34, Fig. 2, the proximate edges of said jaws being caused to converge until they almost meet, there being left between the inner 'port-ions of said jaws a narrow slit-like opening, as shown, having parallel or substantially-parallel sides along and through which the loose ends projecting from aknot may freely be drawn,the width of this slit-like portion of the opening, however, being such as to prevent the passage of aknot. In the case of the device which is represented in Figs. 1, 2, and 3 I form the jaws and intermediate space by making a slit in the upper part of the sheet-metal strip and bending over one of the tongues which areproduced by such slit. (See Figs. 1 and 2.) Good results are secured by making the proximate edges of the jaws somewhat beveled toward the rear side of the device, as at 35 35, since this permits closer approach of the knot to thepoint at which the disconnection of the loose or projecting ends of yarn is effected.

. In the use of the device the ends of yarn requiring to be joined to each other are tied together with a knot in customary manner, and then the yarn, with the knot more or less tightly drawn, is applied to the device in the manner which is illustrated in Fig. 4. The knot being at the rear of the device-that is to say, at the left thereof in Figs. 2 and 4- and the loose or projecting ends of yarn extending through the space between the jaws 32 and 33, the said ends are pressed downwardly between the jaws, so as to carry the knot to the narrowest or slit-like portion of the space interveningbetween the jaws. The said loose or projecting ends are drawn forcibly forward through the slit-like portion of the opening between the jaws, so as to carry the knot into contact with the rear faces of the jaws. The continued pull on the said loose or projecting ends will draw the knot tight and firm and finally will cause said ends to break oif at the jaws, close to the knot. Thus the said knotis tightened and completed and also cleared of projecting portions, while by the breaking off of the'ends the remainder of the yarn is freed and the winding may be proceeded with. The device is exceedingly convenient to use. All that is required to be done by the operative or attendant is to tie the knot, draw it more or less tightly, throw it over behind the device, passing the loose ends into the space between the jaws, and give a slight pull downwardly and forwardly on the said ends until the breakage occurs. The latter invariably takes place in front of the knot, cl osely adjacent to the latter.

In Fig. 5 I have represented my invention as applied to the upper clearer-blade 21, the latter having the upper edge thereof shaped to form'the jaws 37 38 and the intervening space 39 terminating in the inner slit-like portion, in which the ends of the yarn take position to facilitate the breaking thereof.

I claim as my inventiong 1. A knot finisher and trimmer for spooling-frames, comprising rigid jaws between which the loose or projecting ends of yarn may be passed, said jaws having converging rearwardly-beveled edges, and terminating in a narrow, slit-like opening along which the said projecting ends of yarn may bedrawn freely but through which the knots cannot pass.

2. In combination, a yarn guide or clearer for spoofing-frames, having suitable clearingblades between which the yarn runs, and a knot finisher and trimmer for use in disconmeeting the loose ends of the yarn and tightening the knot, said finisher and trimmer comprising jaws between which the loose ends of the yarn may be passed by hand, said jaws having converging edges and terminating in a narrow slit-like opening along which the said projecting ends of yarn may be drawn freely but through which the knot cannot pass.

3. In combination, a yarn guide or clearer for spoolingframes, having suitable clearingblades between which the yarn runs, anda knot finisher and trimmer for severing the loose ends of the yarn an d tightening the knot, reinovably secured to said yarn guide or clearer, said finisher and trimmer comprising jaws between which the loose ends of the yarn may be passed, said jaws having converging edges and terminating in a narrow slit-like opening along which the said projecting ends of yarn may be drawn freely but through which the knot cannot pass.

In testimony whereof I affix my signature in presence of two witnesses.

ARTHUR STAFFORD:

Witnesses:

A. S. McBnAN, S. J. MACPHERSON. 

